| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 2005-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <errno.h> |
| 19 | #include <fcntl.h> |
| 20 | #include <stdarg.h> |
| 21 | #include <stddef.h> |
| 22 | #include <stdio.h> |
| 23 | #include <sys/stat.h> |
| 24 | #include <kernel-features.h> |
| 25 | #include <libc-internal.h> |
| 26 | |
| 27 | /* Some mostly-generic code (e.g. sysdeps/posix/getcwd.c) uses this variable |
| 28 | if __ASSUME_ATFCTS is not defined. */ |
| 29 | #ifndef __ASSUME_ATFCTS |
| 30 | int __have_atfcts; |
| 31 | #endif |
| 32 | |
| 33 | /* Open FILE with access OFLAG. Interpret relative paths relative to |
| 34 | the directory associated with FD. If O_CREAT or O_TMPFILE is in OFLAG, a |
| 35 | third argument is the file protection. */ |
| 36 | int |
| 37 | __openat (int fd, const char *file, int oflag, ...) |
| 38 | { |
| 39 | int mode; |
| 40 | |
| 41 | if (file == NULL) |
| 42 | { |
| 43 | __set_errno (EINVAL); |
| 44 | return -1; |
| 45 | } |
| 46 | |
| 47 | if (fd != AT_FDCWD && file[0] != '/') |
| 48 | { |
| 49 | /* Check FD is associated with a directory. */ |
| 50 | struct stat64 st; |
| 51 | if (__fxstat64 (_STAT_VER, fd, &st) != 0) |
| 52 | return -1; |
| 53 | |
| 54 | if (!S_ISDIR (st.st_mode)) |
| 55 | { |
| 56 | __set_errno (ENOTDIR); |
| 57 | return -1; |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | if (__OPEN_NEEDS_MODE (oflag)) |
| 62 | { |
| 63 | va_list arg; |
| 64 | va_start (arg, oflag); |
| 65 | mode = va_arg (arg, int); |
| 66 | va_end (arg); |
| 67 | |
| 68 | ignore_value (mode); |
| 69 | } |
| 70 | |
| 71 | __set_errno (ENOSYS); |
| 72 | return -1; |
| 73 | } |
| 74 | libc_hidden_def (__openat) |
| 75 | weak_alias (__openat, openat) |
| 76 | stub_warning (openat) |
| 77 | |
| 78 | /* __openat_2 is a generic wrapper that calls __openat. |
| 79 | So give a stub warning for that symbol too. */ |
| 80 | stub_warning (__openat_2) |